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Which of the following statements is not correct?
- a)Higher vertebrates can distinguish foreign organisms from self-cells
- b)Fetus receives antibodies from its mother through placenta, is an example of active immunity
- c)Cell-mediated immunity involves T-lymphocytes
- d)Antibodies against cancer-specific antigens are used for detection of certain cancers
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Which of the following statements is not correct?a)Higher vertebrates ...
Statement B: Fetus receives antibodies from its mother through placenta, is an example of active immunity
The correct answer is statement B, which is not correct. Let's explore why:
1. Active Immunity:
Active immunity is a type of immune response that occurs when the body's immune system directly encounters an antigen and produces a specific immune response against it. This can happen through natural exposure to an antigen (such as an infection) or through vaccination (artificial exposure to a harmless form of the antigen).
2. Passive Immunity:
Passive immunity, on the other hand, is the temporary transfer of pre-formed antibodies from one individual to another. This transfer can occur naturally, such as through the placenta from a mother to her fetus, or artificially, such as through the administration of antibodies (like immunoglobulins) derived from another individual or animal.
3. Fetus and Passive Immunity:
During pregnancy, the mother's antibodies, including immunoglobulin G (IgG), can pass through the placenta and provide temporary protection to the developing fetus. This is known as passive immunity because the fetus does not produce its own antibodies in response to the antigens.
4. Active Immunity in Fetus:
The fetus does not actively participate in the production of antibodies, as it relies on the maternal antibodies for protection. Therefore, the statement that the fetus receiving antibodies from its mother through the placenta is an example of active immunity is incorrect.
5. Cell-Mediated Immunity:
Cell-mediated immunity is a type of immune response that involves the activation of T-lymphocytes (T-cells). T-cells play a crucial role in recognizing and destroying infected cells or cancer cells. This statement is correct.
6. Antibodies against Cancer-Specific Antigens:
Antibodies against cancer-specific antigens can be used for the detection of certain cancers. These antibodies can bind to specific antigens present on cancer cells, allowing for their detection through various diagnostic techniques. This statement is correct.
In conclusion, statement B is not correct because the transfer of antibodies from mother to fetus through the placenta is an example of passive immunity, not active immunity.
The correct answer is statement B, which is not correct. Let's explore why:
1. Active Immunity:
Active immunity is a type of immune response that occurs when the body's immune system directly encounters an antigen and produces a specific immune response against it. This can happen through natural exposure to an antigen (such as an infection) or through vaccination (artificial exposure to a harmless form of the antigen).
2. Passive Immunity:
Passive immunity, on the other hand, is the temporary transfer of pre-formed antibodies from one individual to another. This transfer can occur naturally, such as through the placenta from a mother to her fetus, or artificially, such as through the administration of antibodies (like immunoglobulins) derived from another individual or animal.
3. Fetus and Passive Immunity:
During pregnancy, the mother's antibodies, including immunoglobulin G (IgG), can pass through the placenta and provide temporary protection to the developing fetus. This is known as passive immunity because the fetus does not produce its own antibodies in response to the antigens.
4. Active Immunity in Fetus:
The fetus does not actively participate in the production of antibodies, as it relies on the maternal antibodies for protection. Therefore, the statement that the fetus receiving antibodies from its mother through the placenta is an example of active immunity is incorrect.
5. Cell-Mediated Immunity:
Cell-mediated immunity is a type of immune response that involves the activation of T-lymphocytes (T-cells). T-cells play a crucial role in recognizing and destroying infected cells or cancer cells. This statement is correct.
6. Antibodies against Cancer-Specific Antigens:
Antibodies against cancer-specific antigens can be used for the detection of certain cancers. These antibodies can bind to specific antigens present on cancer cells, allowing for their detection through various diagnostic techniques. This statement is correct.
In conclusion, statement B is not correct because the transfer of antibodies from mother to fetus through the placenta is an example of passive immunity, not active immunity.
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Community Answer
Which of the following statements is not correct?a)Higher vertebrates ...
Fetus receiving antibodies from mother through placenta is an example of passive immunity.
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Which of the following statements is not correct?a)Higher vertebrates can distinguish foreign organisms from self-cellsb)Fetus receives antibodies from its mother through placenta, is an example of active immunityc)Cell-mediated immunity involves T-lymphocytesd)Antibodies against cancer-specific antigens are used for detection of certain cancersCorrect answer is option 'B'. Can you explain this answer?
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Which of the following statements is not correct?a)Higher vertebrates can distinguish foreign organisms from self-cellsb)Fetus receives antibodies from its mother through placenta, is an example of active immunityc)Cell-mediated immunity involves T-lymphocytesd)Antibodies against cancer-specific antigens are used for detection of certain cancersCorrect answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following statements is not correct?a)Higher vertebrates can distinguish foreign organisms from self-cellsb)Fetus receives antibodies from its mother through placenta, is an example of active immunityc)Cell-mediated immunity involves T-lymphocytesd)Antibodies against cancer-specific antigens are used for detection of certain cancersCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is not correct?a)Higher vertebrates can distinguish foreign organisms from self-cellsb)Fetus receives antibodies from its mother through placenta, is an example of active immunityc)Cell-mediated immunity involves T-lymphocytesd)Antibodies against cancer-specific antigens are used for detection of certain cancersCorrect answer is option 'B'. Can you explain this answer?.
Which of the following statements is not correct?a)Higher vertebrates can distinguish foreign organisms from self-cellsb)Fetus receives antibodies from its mother through placenta, is an example of active immunityc)Cell-mediated immunity involves T-lymphocytesd)Antibodies against cancer-specific antigens are used for detection of certain cancersCorrect answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following statements is not correct?a)Higher vertebrates can distinguish foreign organisms from self-cellsb)Fetus receives antibodies from its mother through placenta, is an example of active immunityc)Cell-mediated immunity involves T-lymphocytesd)Antibodies against cancer-specific antigens are used for detection of certain cancersCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is not correct?a)Higher vertebrates can distinguish foreign organisms from self-cellsb)Fetus receives antibodies from its mother through placenta, is an example of active immunityc)Cell-mediated immunity involves T-lymphocytesd)Antibodies against cancer-specific antigens are used for detection of certain cancersCorrect answer is option 'B'. Can you explain this answer?.
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